Oxidative Methanol Reforming Reactions on CuZnAl Catalysts Derived from Hydrotalcite-like Precursors

2001 ◽  
Vol 198 (2) ◽  
pp. 338-347 ◽  
Author(s):  
S Murcia-Mascarós ◽  
R.M Navarro ◽  
L Gómez-Sainero ◽  
U Costantino ◽  
M Nocchetti ◽  
...  
2006 ◽  
Vol 7 (9) ◽  
pp. 696-700 ◽  
Author(s):  
F. Pinzari ◽  
P. Patrono ◽  
U. Costantino

2012 ◽  
Vol 40 (6) ◽  
pp. 714-720 ◽  
Author(s):  
Muhammad Yaseen ◽  
Muhammad Shakirullah ◽  
Imtiaz Ahmad ◽  
Ata Ur Rahman ◽  
Faiz Ur Rahman ◽  
...  

2021 ◽  
pp. 150321
Author(s):  
Tianying Xie ◽  
Hao Zhang ◽  
Jiacheng Zhou ◽  
Wei Sun ◽  
Linghui Ma ◽  
...  

2005 ◽  
Vol 885 ◽  
Author(s):  
Krithi Shetty ◽  
Shihuai Zhao ◽  
Wei Cao ◽  
Naidu V. Seetala ◽  
Debasish Kuila

ABSTRACTThe goal of this research is to investigate the activities of a non-noble nano-catalyst (Ni/SiO2) using Si-microreactors for steam reforming of methanol to produce hydrogen for fuel cells. The supported catalyst was synthesized by sol-gel method using Ni (II) salts and Si(C2H5O)4 as starting materials. EDX results indicate that the actual loading of Ni (5-6%) is lower than the intended loading of 12 %. The specific surface area of the silica sol-gel encapsulated Ni nano-catalyst is 452 m2/g with an average pore size of ∼ 3 nm. Steam reforming reactions have been carried out in a microreactor with 50 µm channels in the temperature range of 180-240 °C and atmospheric pressure. Results show 53% conversion of methanol with a selectivity of 74 % to hydrogen at 5 l/min and 200 °C. The magnetic properties of the catalysts were performed using a Vibrating Sample Magnetometer (VSM) to study the activity of the catalysts before and after the steam reforming reactions. The VSM results indicate much higher activity in the microreactor compared to macro-reactor and Ni forms non-ferromagnetic species faster in the microreactor.


2002 ◽  
Vol 756 ◽  
Author(s):  
Jamie Holladay ◽  
Evan Jones ◽  
Daniel R. Palo ◽  
Max Phelps ◽  
Ya-Huei Chin ◽  
...  

ABSTRACTMiniature and microscale fuel processors that incorporate novel catalysts and microtechnology-based designs are discussed. The novel catalyst allows for methanol reforming at high gas hourly space velocities of 50,000 hr-1 or higher while maintaining a carbon monoxide levels at 1% or less. The microtechnology-based designs extremely compact and lightweight devices. The miniature fuel processors, with a volume less than 25 cm3, a mass less than 200 grams, and thermal efficiencies of up to 83%, nominally provide 25 to 50 watts equivalent of hydrogen, which is ample for the portable power supplies described here. With reasonable assumptions on fuel cell efficiencies, anode gas and water management, parasitic power loss, the energy density was estimated at 1700 Whr/kg. These processors have been demonstrated with a CO cleanup method and a fuel cell stack. The microscale fuel processors, with a volume of less than 0.25 cm3 and a mass of less than 1 gram, are designed to provide up to 0.3 watt equivalent of power with efficiencies over 20%.


2014 ◽  
Vol 58 (2-3) ◽  
pp. 70-76 ◽  
Author(s):  
H. Bahruji ◽  
M. Bowker ◽  
P. R. Davies ◽  
D. J. Morgan ◽  
C. A. Morton ◽  
...  

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